Audion receptacle



. April 14, 1931. FULLER 1,800,827

AUDION RECEPTACLE Filed Nov. 7, 1925 INVENTOR BY r A; Arrows PatentedApr. 14, 1931 UNITED STATES PATENT OFFICE HAROLD E. FULLER, FORESTHILLS, NEW YORK, ASSIGNOR TO DE FOREST RADIO COMPANY, or NEW YORK, n.Y.,

A. CORPORATION OF DELAWARE AUDION nEcnrTAoLn Application filed NovemberThis invention relates in general to audion sockets. One of the objectsof this invention is to provide a resilient shock absorbing mounting foraudion sockets. Another obaject'of this invention is the provision of anew and novel audion socket or receptacle, which includes means for bothresiliently supporting the socket of a base, as well as means forfrictionally engaging the prongs on the audion or vacuum tubes to bereceived by the socket. The same resilient means also forms the contactclips for engagement with the prongs of the audion.

One of theobjects of this invention is the provision of a shockabsorbing vacuum tube receptacle which is simple in construction,efficient in operation, and economical of manufacture and maintenance.

The invention resides substantially in the 2 construction, combination,location and relative arrangement of parts as will be fully "hereinafterset forth.

Referring to the drawings in which the same reference numerals will beused throughout the several views to indicate the same p Fig. 1 is aside elevational view of the socket of my invention showing a vacuumtube secured in place.

Fig. 2 is a bottom plan view of the socket of my invention with someparts broken aiVa.

Flg. 3 is avertical cross-sectional view of the socket of my inventiontaken on the line 3-43 of Fig. 2, looking in the direction of thearrows.

Fig. 4 is an enlarged sectional view of the detail of resilientlymounting the socket tak en on the line 4-4, of Fig. 3, looking in thedirection of the arrows.

As is well known in the radio art any relative movement between theelements of the vacuum tube, that is the rid, plate and filalnent causesvariations oi the electrical constants of the circuits connectedthereto. Therefore, whenever the socket in which is secured a vacuumtube is jarred or set in vibration, microphonic sounds are set up in anycircuits connected thereto, by reasonoi the relative vibration of theseparts. It is,

7, 1925. Serial No. 67,538.

therefore, every essential that such tubes be mounted in such a mannerthat any shocks or vibrations of the supporting means may be absorbedbefore they reach the tube itself. By means of the constructiondisclosed herein, I have been able to eliminate such undesirablemicrophonic sounds set up by vibrations of the supporting means.

In the drawings 1 indicates in general a well known vacuum tube oraudion secured in place in a socket 2 by means of a bayonet pm 4 mountedon the base 3 of the tube and secured in the bayonet slot of the sockettube. At the bottom of the socket 2 are secured concentric rings 6 and7, having integral pro- 'ections 8 which are secured to correspondingintegral projections 9 on the socket 2 by means of rivets 10. On two ofthe integral projections 8 are secured small metal tabs 11,

for the purpose which will be stated hereinafter. Rigidly secured to abase 14, having the central opening 15 therethrough, are a number ofsubstantially U-shaped spring clips12, bolted to the base 14, by means0t bolts 15. These spring clips 12 are arranged at one end 13 to havesecured thereto connecting leads, while the other end pro ects throughradial slots between therings 6 and 7, and have on their inner proecting ends small notches 16. The tabs 11 are secured to the projections8 of the rings, projecting slightly beyond the opening 15in the base 14,so as to limit the motion of the rings and the supported socket. It willbeseen, therefore, that when a vacuum tube is slipped into the socket 2,its prongs Wlll when rotated force the spring clips 12 radially outward,so that the prongs will be snapped into the notches 16 and at the sametime the bayonet pins will travel circumferentlally into its notch 5.Besides frictionally engagin the prongs of the spring chps, I also provle an electrical connection from the prongs to the ends 13 .to which thecircuit wires are to be connected. The socket 2' and its attached ringsare not in contact at any place with the base 14, but are supportedwithin the central opening by means of the resilient sprmg clips 12.will be absorbed by the resilient mounting before they reach the socket2 and any tube I rather for illustrative purposes only, and I incentralopening therein,

tend rather that my invention be confined within the limits described inthe appended claims; I

' What I claim as new and useful and of my own invention and desire tosecure by Letters Patent is- 1. In an audion receptacle, a base having aa socket, insulating rings on said socket, a plurality of spring meanson said base, slidably mounted between said rings and forming aresilient support for said socket on said ,base.

In an audion receptacle, a base having a central opening therein, asocket, insulating rings on said socket, a plurality of spring means onsaid base slidably mounted between said rings and projecting into thecentral opening of said rings so as to be adapted to receive the prongsof an audion.

3. In an audion receptacle, :1. base having a central opening therein, asocket, insulating rings on said socket, a plurality of spring means onsaid base slidably mounted between said rings, and projecting into thecentral opening of said rlngs in such a manner as to provide contactclips for completing the circuits to the prongs of an audion.

4. In an audion receptacle, a base having a central openingtherethrough, a socket, ring means on said socket, and resilientsupports on said base extendin slidably through said ring means, and proectinginto the central opening-of said r in forming means whereby thesocket is resihently supported on said base.

5. In anaudion receptacle, a base having ring means on said socket, andresilient supports on said base extending slidably through said ringmeans, and having notches in the said springs being notched a centralopening therethrough, a socket,

notched to partially surround the contact prong of a vacuum tube andadapted to be orced outwardly in a radial direction throughsaid socketwhen the tube is inserted in proper position in said socket.

In a device of the character described a base platehaving an openingtherein, a

radio t e socket comprising acircular'member of smaller diameter thanthe opening in said plate, a plurality of spring members each attachedatone end to said plate and freely passing at their other ends throughsaid circular member to provide a resilient support for said. socket,the inner ends of to engage the contact points of a radio tube. 1

In testimony whereof I have hereunto set my hand on this 4th day ofNovember, A. D.

HAROLD EULLER.

ends thereof for clamping an audion in the socket by means of rictionalengagement with its prongs.

6. In a device of the character described,

a base late having an opening therein, a radiotube socket comprising acircular memr positioned within said opening, a. plurigi' y fastened tosaid ot er end slidably socket, the free ends base plate and the passingthrough said of each spring being ralitfi ofspring supports each havingone end

